Pusher device for chronographs



June 30, 1942. M. TAUBERT ET AL 2,288,215

PUSHER DEVICE FOR CHRONOGRAPHS Filed Nov. 3, 1958 Inventors 7 W MM Jaw/L T MI 4; 2 fiwwan fifmbm A f M A k S Attorney Patented June 30, 1942 PUSHER DEVICE FOR CHRONOGRAPHS Marcel Taubert, Paul Taubert, and Bernard Taubert, Geneva, Switzerland Application November 3, 1938, Serial No. 238,620 In Switzerland June 21, 1937 2 Claims.

The present invention relates to a pusher device for the key of a chronograph of the type having a pusher independent of the mechanism of the watch and a pipe fitted on the case, the pusher, the pipe and the winder being mounted co-axially with respect to each other so that the whole is hermetically sealed.

The term chronograp is intended to indicate a watch which has an interior mechanism connected with the movement and actuating at least one hand other than the ordinary hands, which indicates at any time the number of time units, say seconds, minutes, or hours, which have elapsed from the moment of starting the mechanism.

According to the invention the tubular body of the pusher is mounted in the pipe, the winding stem is disposed in the body of the pusher and the pipe projects into the hollowed-out button of the winder, the middle part of this button being formed with holes which serve as guides for pins connecting the button of the pusher to its body, and the button of the pusher being partly arranged in a recess formed in the button of the winder.

The pusher device according to the invention is, in particular, independent of the jumping mechanism. The hermetic sealing of the respective parts of the device can be efiected in any convenient manner, for example, mechanically or by means of packing, or by a combination of these two means.

The nature and the method of mounting the counter-acting spring may be of any kind compatible with the efficient operation of the pusher.

In the drawing:

Figure 1 illustrates the pusher in the position of rest, and

Figure 2 illustrates the pusher depressed or in the operative position.

The drawing shows by way of example one form of construction according to the invention in which the hermetic sealing is produced mechanically, whilst the counteracting spring is not illustrated.

I is the button of the pusher, the enlarged body 2 of which is mounted co-axially in the pipe 3 fixed to the watch case 4. The button I of the pusher is itself guided by the recess 5 formed in the crown of the winder. On the outside the pipe 3 serves to guide the recessed crown 6 of the winder, the shank l of which is mounted in the axis of the body 2 of the pusher. The base 8 of this member rests on the upper end of a pin 9 integral with the mechanism of the chronograph. Two pins [0 and H connect the button I of the pusher to its body 2 and fit exactly in the crown 6 of the winder.

The pin 9 is a diagrammatic representation of the element of the mechanism for starting, stopping and zeroing the minute or the second hand which is actuated by pressure upon the button I, the pins 10, H and the parts 2 and 8.

In order to operate the mechanism of the chronograph the pusher is depressed by pressing on its button I which transmits the movement to its body 2 through the intermediary of the pins l0 and H without affecting the hermetic sealing of the device.

After the pressure has been released from the pusher it is returned to the position shown in Figure l, by a spring within the watch.

During the winding operation the crown 6 is rotated, which will rotate the shank I of the winder, while the pins [0 and II will rotate the body 2, without affecting the hermetic sealing of the device.

It can thus be seen that the chronograph pusher device according to the invention is kept hermetically sealed in all circumstances.

We claim:

1. A pusher device for chronographs having in combination: a pipe mounted in a watch case; a pusher body mounted in said pipe; a winder stem mounted in said pusher body and formed at one end as a winder button, the under side of which is formed with a recess adapted to fit over the pipe and the top of which is formed with a further recess, a pusher button disposed in said last named recess; and pins extending from the upper recess to the lower recess in said winder button through corresponding openings formed therein, said pins being rigidly connected at their upper and lower ends to the pusher but ton and pusher body respectively so as to transmit movement of the pusher button to the pusher body.

2. A pusher device for chronographs, having in combination: a pipe mounted in a watch case; a pusher body mounted in said pipe; a winder stem mounted in said pusher body; a winder button formed on the end of said winder stem and having a lower recess formed therein in which is fitted the pipe and an upper recess; a pusher button mounted in said upper recess; and pins rigidly connecting said pusher button to said pusher body; the pipe, and the pusher and winder elements being fitted into each other so as to permit relative movement between the winder and the pusher elements, and movement of the winder button on the pipe whilst providing an hermetically sealed assembly.

MARCEL TAU'BERT. PAUL TAUBERT. BERNARD TAUBERT. 

